Hybrid SR ARQ Scheme Using Trellis Coded Modulation for Point-To-Multipoint Communication Over Nonstationary Channels

Necmi TAŞPINAR

Article Details

Hybrid SR ARQ Scheme Using Trellis Coded Modulation for Point-To-Multipoint Communication Over Nonstationary Channels

Authors:

Necmi TAŞPINAR

Publisher:

TUBITAK

Journal:

Turkish Journal of Electrical Engineering and Computer Science 2002 Vol.10 Issue 1, pp.111-118

Document Type:

Article

Publication Date:

12/2001

Document Language:

Turkish

Document ID (Org No.):

2000744362

Frequency:

Bimonthly

eISSN:

1303-6203

pISSN:

1300-0632

Abstract:

 

In this paper, a type-I hybrid SR ARQ scheme using trellis coded  modulation (TCM) for point-to-multipoint communication was analyzed on  nonstationary broadcast channels where the channel bit error rate  (BER) varies over time.  A nonstationary channel is modelled as a  two-state Markov chain.  In the numerical calculations, it is found   that, for a given p1 and \bar \varepsilon , the values of the  average burst length  \bar b have a very small influence on the  throughput.  Numerical results show that the throughput is better for  values between 10 -6 and 10 -4of average bit error rate  \bar \varepsilon  if the errors occur in bursts.  However, the  scheme performs better for the stationary channel when the average bit  error rate becomes large.  For medium and high values of  \bar  \varepsilon  , the throughput decreases when the number of receivers  increases.

 

In this paper, a type-I hybrid SR ARQ scheme using trellis coded  modulation (TCM) for point-to-multipoint communication was analyzed on  nonstationary broadcast channels where the channel bit error rate  (BER) varies over time.  A nonstationary channel is modelled as a  two-state Markov chain.  In the numerical calculations, it is found   that, for a given p1 and \bar \varepsilon , the values of the  average burst length  \bar b have a very small influence on the  throughput.  Numerical results show that the throughput is better for  values between 10 -6 and 10 -4of average bit error rate  \bar \varepsilon  if the errors occur in bursts.  However, the  scheme performs better for the stationary channel when the average bit  error rate becomes large.  For medium and high values of  \bar  \varepsilon  , the throughput decreases when the number of receivers  increases.

Article Details

Hybrid SR ARQ Scheme Using Trellis Coded Modulation for Point-To-Multipoint Communication Over Nonstationary Channels

Authors: Necmi TAŞPINAR

Publisher: TUBITAK

Journal: Turkish Journal of Electrical Engineering and Computer Science 2002 Vol.10 Issue 1, pp.111-118

Document Type: Article

Publication Date: 12/2001

Document Language: Turkish

Document ID (Org No.): 2000744362

Frequency: Bimonthly

eISSN: 1303-6203

pISSN: 1300-0632

Issues

Authors:

Necmi TAŞPINAR

Publisher:

TUBITAK

Journal:

Turkish Journal of Electrical Engineering and Computer Science 2002 Vol.10 Issue 1, pp.111-118

Document Type:

Article

Publication Date:

12/2001

Document Language:

Turkish

Document ID (Org No.):

2000744362

Frequency:

Bimonthly

eISSN:

1303-6203

pISSN:

1300-0632